baber/WOPTO huggingface dataset:
Patent GB-476336-A (GB)
Title: Improvements in or relating to electric circuits for the production of current of sawtooth wave form
IPC: H03K4/28
Filed: 1936-05-04
Abstract: 476,336. Valve generating circuits. CACKETT, F. W. (Telefunken Ges. f³r Drahtlose Telegraphie) May 4, 1936, No. 12624. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 4, 1936.] [Class 40 (v)] Saw-tooth current is generated in the de flecting-coil 12 of a cathode-ray tube by connecting the coil in the plate circuit of a valve 10 in parallel with a rectifier 13 and voltage source 14, and by applying to the grid of the valve a voltage of saw-tooth form the slope of which is such that the plate current of the valve rises with the slope desired for the coil current. When the valve 10 is blocked, the current through the coil 12, which had previously been in the upward direction on the diagram and steadily rising, suddenly reverses, the coil tending to oscillate at its own natural frequency. After a half-wave of this oscillation (which constitutes the flyback portion of the saw-tooth current) the voltage across the coil resumes the same direction as it had before the valve was blocked. This voltage predominates over that of the source 14 and the rectifier 13 becomes conductive. The self-oscillation of the coil 12 ceases, and the downward current in it gradually falls towards zero. Before reaching zero value, the valve 10 is gradually opened by the rising slope of the voltage applied to its grid. The plate source 11 now supplies plate current to the valve, first through the rectifier 13 only, and later through the rectifier and the coil 12 in the upward direction. During the remainder of the cycle the current through the rectifier is constant and the current in coil 12 rises at the same rate as the rise in voltage of the valve grid. The Specification includes explanatory diagrams, and considers the effect of substantial resistance in the coil 12. Specification 400,976 is referred to.
Patent GB-679830-A (GB)
Title: Improvements in or relating to shovels and like handling appliances
IPC: E02F3/407
Filed: 1949-05-12
Abstract: 679,830. Scoop arm load handling machines. NADLER, J. L. G. Aug. 11, 1950. [May 12, 1949] No. 12653/49. Class 78 (iii). In a scoop arm shovel of the kind in which a scoop is pivotally supported by a yoke about an axis located forward of the centre of gravity of the scoop to allow a predetermined amount of angular displacement between the scoop and yoke when the scoop is loaded, provision is made for automatically restoring the scoop to its original. position as the load is discharged. A yoke ], Fig. 3, pivoted to a scoop arm (not shown) at 2, 2 is pivotally attached at 4 to a bucket 3 which, when empty, is maintained with its bottom horizontal by a spring 20 and levers 15, 17, but which, during loading, extends spring 20 and swings about pivot 4 to the position shown so executing a digging movement. Stops 22, 23 are provided to limit this movement. Discharge of the bucket is effected by manually releasing latches 13 from catches 12, formed on cheeks 11 integral with the bottom plate 9, so allowing said plate 9 to swing to the chain dotted position about a pivot 10 which also forms an axle for a ground engaging roller 32. An abutment 25 is provided to limit the movement of the bottom plate. The yoke 1 directly supports the bucket through cheeks 8 which are connected by a lip 7 so that the forces resulting from digging bear directly on the yoke and this allows the scoop to be of relatively light construction. In a modification, Fig. 4, the bottom 9 and rear plate 6 are of integral construction and tilt together as shown chain dotted, the latch 13, which engages the plate 6, being pivoted to a cross member 26 and the abutment 22 being secured to a second cross member 27. In a further modification, Fig. 5, the links 15, 17 are replaced by an arrangement comprising a shaft 29 carrying a pinion 28 meshing with a rack 27 on the bucket, and a sprocket 30 engaging a chain 31 secured to the spring 20. As in the previous arrangements the tension of spring 20 is adjustable. Movements of the yoke 1 may be carried out manually when light materials have to be loaded.
Patent GB-831011-A (GB)
Title: Improvements in detectors of oil mists and the like
Inventor: MATHISEN ANDERS
IPC: G01N21/53
Filed: 1957-04-18
Abstract: 831,011. Detecting oil mists photo-electrically. GRAVINER MANUFACTURING CO. Ltd. April 16, 1958 [April 18, 1957], No. 12656/57. Class 40 (3). An oil mist detector has a duct 23 between windows 13, 14 of a detection chamber and cuffs 21, 22 extending from the windows into the duct so that oil mist from a crank-case entering the chamber by a pipe 12 passes between the cuffs and duct to be extracted by a fan 11 from an opening 25 at the top of the duct without depositing carbon on the windows. A baffle 24 of greater radius than the cuffs is welded along its centre thereto. An observation window (not shown) may be provided in the centre of the duct 23. In operation a photocell 16 outside the window detects the interference by mist of light from a source 15 outside the other window while a comparison photo-cell 17 is illuminated by a lamp 18. Specification 825,451 is referred to.
Patent GB-373373-A (GB)
Title: Improvements in or relating to appliances used in harvesting hay, corn or the like
IPC: A01D76/00
Filed: 1931-04-29
Abstract: 373,373. Harvesting- appliances. DAVIS, C. E., Wick Farm, West Kington, Wiltshire. April 29, 1931, No. 12663. [Class 6 (iii).] A harvesting-appliance comprises sweeping teeth over which hay, corn, or the like passes to a trolley platform attached to a pivoted beam to which the draw-bar is fixed, the ends of the teeth lying on the top of the beam and both trolley and beam being provided with wheels. The beam 4 carrying the teeth 1 is pivoted on axles 10 on which road wheels 3 are freely mounted and which also carry the front of the girder frame 8 of the trolley 2, the latter being supported at the rear by smaller swivel wheels 5. The beam 4 carries at its ends swivel plates 13 to which the tractor draw-bar 12 is adjustably fixed by means of bolts. The draw-bar may comprise unequal members so that the tractor is displaced to one side of the appliance, and may be so bent as to afford clearance for sheaves of corn. Longitudinal iron strips or battens 21 are provided on the platform to facilitate sliding of the crop. Fences 17 are arranged at the sides and rear of the platform 2.
Patent GB-1413416-A (GB)
Title: Micrometer caliper
IPC: G01B/
Filed: 1973-03-16
Abstract: 1413416 Micrometers SOC INTERNATIONALE DE MECANIQUE INDUSTRIELLE SA 16 March 1973 [16 March 1972] 12678/73 Heading G1M The stamped sheet steel frame 2 is brazed to the boss 1 and carries plastics plates 8 on each side. The diameter of the anvil 3 which is bonded to the frame does not exceed the thickness of the frame.
Patent GB-551259-A (GB)
Title: Improvements in fluid operated means for controlling apparatus at a distance
IPC: F15B9/12
Filed: 1941-10-01
Abstract: 551,259. Fluid-pressure servomotor-control systems. DODSON, E. Oct. 1, 1941, No. 12690. [Class 135] In a remote control system, leakage is evacuated from the receiver unit to exhaust by a pump 61 operated through a lever 64 and a cam 42 from the power piston. An air vent 68 has a deflector plate 69. Specifications 483,049, 534,986, 543,894, 544,793, 551,256, 551,257, 551,258 and 551,260 are referred to.
Patent GB-579912-A (GB)
Title: Improvements in portable decks for airplane runways and the like
IPC: E01C9/08
Filed: 1944-07-04
Abstract: 579,912. Aircraft &c. runways. CARNEGIEILLINOIS STEEL CORPORATION. July 4, 1944, No. 12723. Convention date, Sept. 9, 1943. [Classes 20 (iv) and 107] In a runway for aircraft or other vehicles comprising abutting rectangular metal plates 2, one plate of each pair being provided along one of its longitudinal edges 9 with a series of aligned spaced downwardly-projecting lugs 10 aligned with and adapted to be extended through a corresponding series of openings 15 inwardly of one of the longitudinal edges of the other plate, the openings being larger than enlarged heads 13 of the lugs, as described in Specifications 562,473 and 562,681, the plates of each pair are locked together by means of one or more lugs formed integrally with and positioned below the top of one plate, and extending transversely of said openings to engage the other plate when the plates are moved longitudinally relative to one another. In the form shown in Fig. 1, locking lugs 17 projecting slightly downwards as at 19 are formed between the lugs 10, and may be bent down into the obstructing position shown at 21. For this purpose the slots 15 may be enlarged as at 23. The plates 2 may be strengthened by longitudinal U-shaped grooves 5 and by flanges struck up around circular apertures 6, as described in Specification 571,921. In the form shown in Fig. 4, a locking lug 25 is provided adjacent one of the openings 15, and prior to assembly is bent normal to the plate, being bent upwardly into the obstructing position after assembly.
Patent GB-180187-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/32
Filed: 1921-05-04
Abstract: 180,187. Spiers, W. May 4, 1921. Circular machines.-A free-wheel or one-way clutch is combined with a friction device for oscillating the sinker cam during rotary-reciprocating knitting, eo that the friction device is inoperative during round-and-round knitting. The invention is applicable to the type of machine described in Specification 24290/12 and to other types. A radial arm 1 rigidly attached to and projecting from a sleeve 2 on which the sinker cam (not shown) is mounted is permitted a limited movement between stops 3, 4 which are adjustable along slots 5 in a stationary part 6. The arm 1 is held against the stop 3 by. a spring 7 and can be pulled away by means of a link 11 pivoted to the arm and to a crank pin 12 on a friction disc 13 with a fibre facing 14. The disc is pressed by a spring 15 into frictional contact with a driving-member 16 on a free-wheel device 17, 18 driven by a shaft 19 forming part of the mechanism for imparting oscillation to the needlecylinder. The hub 18 is fast on the shaft 19 and the driven part 17 revolves freely in the direction of the arrow 24 when round-and-round knitting is being done, but is driven by pawls 20 when the hub 18 turns in the direction of the arrow 25 as happens during rotary-reciprocating knitting, the parts 13. 16 slipping when the arm 1 comes against the stop 4. When the shaft 19 reverses, the parts 13, 16, 17 and 18 move with it in the direction of the arrow 24 and allow the spring 7 to move the arm 1 back against the stop 3. A smaller type of device, with rollers in place of the pawls 20, is also described.
Patent GB-400681-A (GB)
Title: Improvements in or relating to lubricating oils
IPC: C10M169/00
Filed: 1932-05-04
Abstract: Lubricants for fibres are prepared by mixing with a hydrocarbon oil, or with a mixture of oils containing more than 10 per cent of hydrocarbon oil, up to 25 per cent of an aliphatic alcohol, ether or amine (or a mixture thereof) which contains more than eight carbon atoms in the molecule and preferably has a flash point above 340 DEG F. by the open-cup test, and which also reduces the interfacial tension of mineral oil and water when added in small amount to the oil, and is readily soluble in oil but only sparingly soluble in water or dilute alkali solutions.  Specified alcohols, ethers and amines are oleyl alcohol, the alcohols and ethers derived from wool fat by low-pressure distillation, and octadecenylamine.  The lubricants are readily removed from the fibres by soap solution, with or without soda.  The fibres which may be treated include wool, cotton, silk, rayon, flax, hemp and jute.  The Provisional Specification refers to the manufacture of lubricants for fibres or for machinery by mixing with a mineral, hydrocarbon, fatty or soluble oil or a mixture thereof, whether neutral or containing free fatty acids, an alcohol, ketone, ether or ester preferably having more than eight carbon atoms in the molecule.
Patent GB-611367-A (GB)
Title: Improvements in and relating to needles or bodkins for threading lingerie or thonging leather goods and the like
IPC: D05B85/00
Filed: 1946-04-30
Abstract: 611,367. Bodkins. CHAWNER, E. J. April 30, 1946, No. 12941. [Class 112] A bodkin comprises two superposed limbs, integrally or otherwise connected at one end, the free end of one limb being provided with a single slot or eye A and the free end of the other limb being provided with a pair of slots or eyes B, C. The end of the thread is passed in turn through the eyes A, B, C, and is gripped between the limbs when the thread is tensioned. To house the thread a recess may be provided in the outer surface of each limb, and such recesses extend from the eye A to the free end on one limb and between the eyes B, C on the other. The bodkin may be metal and may be pointed.
Patent GB-884060-A (GB)
Title: Improvements in or relating to direct current series motor armatures
IPC: H02K23/66
Filed: 1958-04-23
Abstract: 884,060. Electric motors. LEECE-NEVILLE CO. April 23, 1958 [April 24, 1957], No. 12955/58. Class 35. In a D.C. series motor armature comprising a cylindrical core 5 having a plurality of circumferentially spaced axially extending slots 7 in which are distributed the coils A, B, C, &c., of a working winding each coil overlapping portions of the coils in other slots and having a circumferential span of at least three slots, noload speed limitation is provided by means which permanently short-circuit at least one coil of the winding. In the embodiment shown, a jumper 17 is connected across lugs 16 of commutator segments X, Y across which coil B is connected ; and in modification not shown the ends of coil B are soldered together and not to the commutator, coil A is connected directly to segment Y, and the jumper may or may not be provided. Greater limitation may be effected by shorting out additional coils.
Patent GB-1497396-A (GB)
Title: Radiography
IPC: G01N23/04
Filed: 1974-03-23
Abstract: 1497396 Radiography EMI Ltd 14 March 1975 [23 March 1974 20 April 1974 26 July 1974] 13018/74 17402/74 33033/74 Heading H4F [Also in Division H1] Apparatus for examining a slice of a body by X- or γ-radiation which is of the type described in Specification 1,283,915 in which the body is irradiated with a fan shaped spread 23 of radiation which is detected by a plurality of detectors 10, the radiation source Bu and detectors 10 being orbited around the body so that it is irradiated along a plurality of angular positions and the resulting data from the detectors being processed to derive a reconstruction of the distribution of absorption of radiation within the scanned body slice, wherein the effect of differences between the sensitivities of the different detectors is reduced by displacing the source (from Bu to Bd) relative to the detectors and utilizing the signals derived from a first detector while the source and detectors occupy the two relative positions to predict the value of the output signal which should have been obtained from an adjacent detector, this predicted value being then compared with the value of the output signal actually provided by the adjacent detector and any difference therebetween used to correct said latter output signal. This prediction and comparison is effected along the line of detectors in a progressive manner using the corrected output signals for each detector to predict the output signal from the next adjacent detector. The fan shaped beam 23 may be kept in position Bu for one half of the period over which the detector output signals have previously been integrated (e.g. corresponding to a 1 degree rotation of the fan beam relative to the body) and then moved to position Bd for the remaining half of the period. (Alternatively it is possible to oscillate the position of the source of the fan beam more rapidly so that each position is occupied several times during the increment of angular motion.) Timing pulses separated by a time equivalent to rotation of the source and detectors through ¢ degree are generated photoelectrically by radial lines on a disc 70, and these pulses are used to control the displacement of the source and the passing of the output signals corresponding to each position thereof to respective stores. The corrected values are calculated from these stored signals and the resulting corrected outputs processed in accordance with a convolution technique according for example to that described in Specification 1,471,531. An X-ray tube arrangement in which the exciting electron beam is deflected to thereby provide the alternation of relative positions of the source and detectors is described (see Division H1).
Patent GB-722007-A (GB)
Title: New or improved sling net
IPC: B66C1/12
Filed: 1951-06-01
Abstract: 722,007. Nets. SCHORR, R. T., [trading as TECHNISCHE HANDELSONDERNEMING FIRMA ALMETA]. June 1, 1951 [Jan. 18, 1951], No. 13060/51. Class 74 (1). [Also in Groups XXII and XXV] Mesh-forming connections, cable junctions (see also Group XXV), and hoisting loops in a sling net, are produced by threading the wires or cables through metal sleeve members 6, 5, 13, 4, and securing them therein by indentation which may be produced by a screw punch (see Group XXII). The meshes may be formed by passing the wires through cruciform sleeves 6, in which the bores are preferably at different levels, or by causing the wires to follow sinuous paths, connecting them to one another and to the marginal wire 1 by the members 4, each of which has two parallel bores. The indentations are so formed that parts of the sleeve walls are pressed between the cable strands.
Patent GB-962436-A (GB)
Title: Spot remover
IPC: C11D3/34
Filed: 1961-04-11
Abstract: A spot removing composition comprises (a) an amine sulphite or hyposulphite, particularly triethanolamine or triisopropanolamine sulphite or monoethanolamine hyposulphite, (b) a polyhydric alcohol or an ester or ether thereof, e.g. ethylene and polyethylene glycol, alkylaryl polyglycol ethers, ethylene glycol monoethyl and monobutyl ethers, ethenoxylated propylene glycol, and glycerol monoacetate, and (c) either water, or another organic solvent for (a), e.g. ethanol, isopropanol, methanol, butanol, cetanol, toluene, halogenated hydrocarbons and esters. The composition may contain detergents such as alkyl sulphates and sulphonates and thickeners such as a cellulose ether and may be produced as a liquid or paste.  In addition, the compositions may be used to impregnate fleeces and sponges of natural or synthetic fibres or paper cloths so as to provide spot-removing cloths; they are also useful as froth detergents or shampoos.
Patent GB-131208-A (GB)
IPC: F16L51/02
Abstract: 131,208. Rose, T. Nov. 5, 1918. Expansion joints.-An expansion joint for piping is formed of a tubular member 3, 4 formed with an outward bulge of uniform thickness, the circumferential part 8 of which is flattened and is connected to the lateral walls 6, 7 of the bulge by tounded portions 9, 10. The tubular parts 3, 4 are connected to flanges 1, 2 by rivets 5 in the ordinary manner. The construction is adapted to cause greater resistance to bending stresses to be offered by the flat part 8 than by the walls 6, 7, so that the bending movements are divided equally between the curved portions 9, 10, and the walls 6, 7 act as diaphragms.
Patent GB-1029904-A (GB)
Title: Improvements in or relating to tuning devices with push-buttons
IPC: H03J5/12
Filed: 1964-03-31
Abstract: 1,029,904. Push-button tuning mechanisms. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 31, 1964, No. 13128/64. Heading H3Q. The invention relates to a tuning mechanism of the type disclosed in Specification 1,028,073, in which each push-button 1 operates a stripshaped slide 3 carrying a semi-circular disc 7 whose edge engages pins 25, 27 on a rotatable tuning member 31 when the push-button is depressed. The disc 7 is rotatable about a pivot 9 on the slide and is normally locked in position by means of a slider 21 and a U- shaped clamping lever 11, which is depressed (see Fig. 3), to release the disc for the purpose of setting. In the present instance continuous tuning is also provided by means of a knob 41 which rotates a shaft carrying worm 43 engaging worm-wheel 45; this is carried loose on shaft 23 which drives the tuning means, e.g. a sliding core, via member 31 and a steel wire 33. The worm-wheel 45 is normally clamped to the shaft 23 by means of clamping members 47, 49 and pressure plate 51 which are connected by three or more pins 51, together with cup spring 55; it can however be released by means of a bell-crank 59 carried by pivot 57. This comes into operation whenever a slide is depressed, the limb 15 of each clamping lever 11 engaging a lug-shaped projection 63 carried by a shaft 61 which is thereby rotated, causing a second lug 65 to operate the crank 59 and so release the worm-wheel 45 before the disc 7 comes into contact with pins 25, 27. To reset the disc 7 for another station, the push-button is pulled out, carrying with it slider 21, so that clamping lever 11 falls (see Fig. 3). The tuning is then set manually; upon resetting the slide limb 15 travels under the lugs 63, 65 and the tuning is not disturbed; when lever 11 finally rises, limb 15 lifts lugs 63, 65 and shaft 61 against the pressure of spring 65, and so crank 59 is not disturbed. Upon withdrawal of the slide 3 the shaft 61 falls and normal pushbutton operation is available.
Patent GB-552576-A (GB)
Title: Improvements in or relating to rotary table bushings for oil well drilling
IPC: E21B3/04
Filed: 1941-10-13
Abstract: 552,576. Well drilling. OIL WELL ENGINEERING CO., Ltd. (National Supply Co.)., Oct. 13, 1941, No. 13164. [Class 85] A bushing for use in a rotary well-drilling table has a cylindrical lower end, and a polygonal upper end 2' adapted to engage a corresponding opening 3 in the table 4, and is formed of sections 8, 9, with pivot pins 10, 11, connected by a link 12 comprising horixontal arms 13, 14, connected by a vertical bar 15 which permits relative transverse movement of the sections 8, 90 the free ends of the sections 8, 9, have integral radial interlocking lugs 21 which may be held against separation by a latch 29 pressed by a spring 31 into engagement with a recess 30, and freed by means of a handle 32. A grip bar 33 is provided in a recess in the section :9. The bushing has a tapered bore 6 adapted to receive slips for supporting the drill tubes 36, or a drive brushing as described in U.S.A. Specification -11347,771., which is driven by pins in holes 34 and drives the tubes 36; the holes 34 have drain openings 35. The sections 8, 9 have recesses 39 adapted to be engaged by lifting hooks.
Patent GB-361291-A (GB)
Title: An improved system of supplying wireless receiving installations from direct or alternating current mains
IPC: H04B1/16
Filed: 1930-04-29
Abstract: 361,291. Mechanical switches without quick action. NAEF, W. M., 28, Rue Joseph Gaillard, Vincennes, Seine, France. April 29, 1930, No. 13226. Convention date, April 30, 1929. Void [Published under Sect. 91 of the Acts]. [Class 38 (v).] Contacts.-A switch controls the connections of the cells of a battery so that in one position some connected in series-parallel may provide filamentheating current and others, connected in series, anode current for a wireless receiver, whereas in the other position current flows from a charging source through a series circuit comprising the anode cells connected in series parallel and the filament beating cells connected in series. The movable switch element is a pivoting member 18 to which blades 17 are secured and connected to the elements of the battery. Each of the fixed contacts consists of a tubular rivet 23 in which is set a rivet 25, for example of lead, securing a conductor 26. The contacting head of the rivet 23 has a cap of unoxidizable metal such as silver.